Incase has released their protective cover for the iPhone in more colors, actually the CMYK pack. These cases represent the four standard process colors referred to as CMYK or Cyan, Magenta, Yellow and Black. In print, these fundamental elements work together in creating the full spectrum of color.
The Incase covers proofed to be some of the most useful and least disturbing ones. Now you finally have some more fun colors in there as well.